Mo Dao Zu Shi (Chinese: 魔道祖师; pinyin: Módào Zǔshī; lit. 'Demonic Path Ancestral Master') is a Chinese donghua series based on the novel of the same name written by Mo Xiang Tong Xiu (Chinese: 墨香铜臭). It is produced by Tencent Penguin Pictures and B.C May Pictures. The series depicts a fictional xianxia world where humans attempt to cultivate to a state of immortality, known as xian (Chinese: 仙). The protagonist of the series, Wei Wuxian, due to certain circumstances, deviated from the conventional cultivation path to xian and eventually created Guidao (the Ghost Path).

The first season, titled Qian Chen Pian (Chinese: 前尘篇), aired from July 9 to October 6, 2018, on Tencent Video for 15 episodes. The second season, titled Xian Yun Pian (Chinese: 羡云篇), aired from August 3 to August 31, 2019, for 8 episodes. A chibi series, titled Mo Dao Zu Shi Q, aired from July 31, 2020, to January 29, 2021, and ran for 30 episodes. The third and final season, titled Wán Jié Piān (Chinese: 完结篇), aired from August 7 to October 16, 2021, for 12 episodes. The first two seasons were released on Crunchyroll on December 11, 2024.